Here's why:

* Hormones are chemical messengers: They are produced by specialized cells within endocrine glands and travel through the bloodstream to target cells and organs, where they exert their effects.

* Endocrine glands are the "factories" of hormones: The endocrine system consists of various glands, such as the pituitary gland, thyroid gland, adrenal glands, pancreas, ovaries (in females), and testes (in males). Each gland produces specific hormones that regulate a wide range of bodily functions.

* Hormones control vital processes: From growth and development to metabolism, reproduction, and mood, hormones are essential for maintaining homeostasis and ensuring proper bodily function.

While other systems like the nervous system also produce hormones, the endocrine system is specifically dedicated to hormone production and regulation.